原创 采集频率

采集频率

用一个定时器和中断

const rom unsigned int f_16[392]=  //f = 50 ~440 hz
{
0X4EEA,   //49.5
0X4D59,   //50.5
0X4BD9,
0X4A67,
0X4903,
0X47AC,
0X4662,
0X4523,
0X43EF,
0X42C6,
0X41A6,
0X4090,
0X3F84,
0X3E80,
0X3D84,
0X3C8F,
0X3BA3,
0X3ABD,
0X39DE,
0X3906,
0X3834,
0X3768,
0X36A2,
0X35E1,
0X3525,
0X346E,
0X33BD,
0X330F,
0X3267,
0X31C2,
0X3122,
0X3086,
0X2FED,
0X2F59,
0X2EC8,
0X2E3A,
0X2DAF,
0X2D28,
0X2CA4,
0X2C23,
0X2BA5,
0X2B29,
0X2AB0,
0X2A3A,
0X29C7,
0X2956,
0X28E7,
0X287A,
0X2810,
0X27A8,
0X2742,
0X26DE,
0X267C,
0X261C,
0X25BD,
0X2561,
0X2506,
0X24AD,
0X2456,
0X2400,
0X23AC,
0X2359,
0X2308,
0X22B8,
0X226A,
0X221D,
0X21D2,
0X2187,
0X213E,
0X20F6,
0X20B0,
0X206A,
0X2026,
0X1FE3,
0X1FA1,
0X1F60,
0X1F20,
0X1EE1,
0X1EA3,
0X1E66,
0X1E2A,
0X1DEE,
0X1DB4,
0X1D7B,
0X1D42,
0X1D0A,
0X1CD4,
0X1C9E,
0X1C68,
0X1C34,
0X1C00,
0X1BCD,
0X1B9B,
0X1B69,
0X1B38,
0X1B08,
0X1AD8,
0X1AA9,
0X1A7B,
0X1A4E,
0X1A20,
0X19F4,
0X19C8,
0X199D,
0X1972,
0X1948,
0X191E,
0X18F5,
0X18CD,
0X18A5,
0X187D,
0X1856,
0X182F,
0X1809,
0X17E4,
0X17BF,
0X179A,
0X1776,
0X1752,
0X172E,
0X170B,
0X16E9,
0X16C6,
0X16A5,
0X1683,
0X1662,
0X1642,
0X1621,
0X1601,
0X15E2,
0X15C3,
0X15A4,
0X1585,
0X1567,
0X1549,
0X152C,
0X150E,
0X14F1,
0X14D5,
0X14B9,
0X149D,
0X1481,
0X1465,
0X144A,
0X142F,
0X1415,
0X13FB,
0X13E1,
0X13C7,
0X13AD,
0X1394,
0X137B,
0X1362,
0X134A,
0X1332,
0X1319,
0X1302,
0X12EA,
0X12D3,
0X12BC,
0X12A5,
0X128E,
0X1278,
0X1261,
0X124B,
0X1236,
0X1220,
0X120A,
0X11F5,
0X11E0,
0X11CB,
0X11B7,
0X11A2,
0X118E,
0X117A,
0X1166,
0X1152,
0X113F,
0X112B,
0X1118,
0X1105,
0X10F2,
0X10DF,
0X10CD,
0X10BA,
0X10A8,
0X1096,
0X1084,
0X1072,
0X1060,
0X104F,
0X103E,
0X102C,
0X101B,
0X100A,
0XFF9,
0XFE9,
0XFD8,
0XFC8,
0XFB8,
0XFA8,
0XF98,
0XF88,
0XF78,
0XF68,
0XF59,
0XF49,
0XF3A,
0XF2B,
0XF1C,
0XF0D,
0XEFE,
0XEF0,
0XEE1,
0XED3,
0XEC4,
0XEB6,
0XEA8,
0XE9A,
0XE8C,
0XE7E,
0XE70,
0XE63,
0XE55,
0XE48,
0XE3A,
0XE2D,
0XE20,
0XE13,
0XE06,
0XDF9,
0XDED,
0XDE0,
0XDD3,
0XDC7,
0XDBA,
0XDAE,
0XDA2,
0XD96,
0XD8A,
0XD7E,
0XD72,
0XD66,
0XD5A,
0XD4F,
0XD43,
0XD38,
0XD2C,
0XD21,
0XD16,
0XD0A,
0XCFF,
0XCF4,
0XCE9,
0XCDE,
0XCD4,
0XCC9,
0XCBE,
0XCB4,
0XCA9,
0XC9F,
0XC94,
0XC8A,
0XC80,
0XC75,
0XC6B,
0XC61,
0XC57,
0XC4D,
0XC43,
0XC39,
0XC30,
0XC26,
0XC1C,
0XC13,
0XC09,
0XC00,
0XBF6,
0XBED,
0XBE4,
0XBDA,
0XBD1,
0XBC8,
0XBBF,
0XBB6,
0XBAD,
0XBA4,
0XB9B,
0XB92,
0XB8A,
0XB81,
0XB78,
0XB70,
0XB67,
0XB5F,
0XB56,
0XB4E,
0XB46,
0XB3D,
0XB35,
0XB2D,
0XB25,
0XB1C,
0XB14,
0XB0C,
0XB04,
0XAFC,
0XAF5,
0XAED,
0XAE5,
0XADD,
0XAD5,
0XACE,
0XAC6,
0XABF,
0XAB7,
0XAAF,
0XAA8,
0XAA1,
0XA99,
0XA92,
0XA8B,
0XA83,
0XA7C,
0XA75,
0XA6E,
0XA67,
0XA60,
0XA59,
0XA52,
0XA4B,
0XA44,
0XA3D,
0XA36,
0XA2F,
0XA28,
0XA22,
0XA1B,
0XA14,
0XA0E,
0XA07,
0XA00,
0X9FA,
0X9F3,
0X9ED,
0X9E6,
0X9E0,
0X9DA,
0X9D3,
0X9CD,
0X9C7,
0X9C0,
0X9BA,
0X9B4,
0X9AE,
0X9A8,
0X9A2,
0X99C,
0X995,
0X98F,
0X98A,
0X984,
0X97E,
0X978,
0X972,
0X96C,
0X966,
0X960,
0X95B,
0X955,
0X94F,
0X94A,
0X944,
0X93E,
0X939,
0X933,
0X92E,
0X928,
0X923,
0X91D,
0X918,
0X912,
0X90D,
0X908,
0X902,
0X8FD,
0X8F8,
0X8F2,
0X8ED,
0X8E8,
0X8E3,
0X8DE

};

InterruptHandlerHigh ()
{
if (INTCONbits.INT0IF)
 {
 INTCONbits.INT0IF = 0;
    CCP.CCP_H = TMR1H;
    CCP.CCP_L = TMR1L;

    TMR1H = 0;      
   TMR1L = 0;
    T1CONbits.TMR1ON = 1;    //1 = 使能Timer1 

    LedData[count] = CCP.CCP_HL;

 if (count++ >= 9)                //
       {
     count = 0;
     if (Flags.CCP_flag == 0)
     Flags.CCP_flag = 1;       //使能，在主程序中进行处理
    }
 
  
 }